hollowed-out wooden utensil
Refers to a container or utensil made by carving out a single piece of wood, such as a bowl or tray.
This hollowed-out wooden utensil is made from a single piece of wood.
From 刳る (くる, 'to hollow out') + 物 (もの, 'thing'). The exact historical derivation is uncertain, but the word literally means 'hollowed-out thing'.